# type topo
# cell     4.231100     4.231100     1.000000    90.000000    90.000000   120.000000
18
  1 v      0.866106    0.000000    0.250000   0                              8/9      6/13      1/14      1/12     12/13     12/12      11/9     11/10 
  2 v     -0.433053    0.750070    0.250000   0                              4/4      9/12      2/12      2/14     12/13     12/12      10/3      10/4 
  3 v      1.682497    2.914170    0.250000   0                             5/13      7/12      3/14      3/12     11/22     11/21     10/16     10/15 
  4 v      2.981656    1.221413    0.583333   0                             2/22      9/22      4/12      4/14     15/13     15/14     14/13     14/14 
  5 v      1.682497    1.971483    0.583333   0                             3/13      7/13      5/12      5/14     15/13     15/14     13/13     13/14 
  6 v      1.682497    0.471343    0.583333   0                             1/13      8/10      6/14      6/12     14/13     14/14     13/13     13/14 
  7 v      0.866106    2.442827    0.916667   0                             3/14      5/13      7/14      7/12     18/13     18/14     17/13     17/14 
  8 v     -0.433053    3.192897    0.916667   0                             1/17      6/16      8/14      8/12     16/13     16/14     18/13     18/14 
  9 v     -0.433053    1.692757    0.916667   0                             2/14       4/4      9/14      9/12     16/13     16/14     17/13     17/14 
 10 v      3.364994    0.000000    0.750000   0                             2/23      2/22      3/10      3/11     14/14     18/10     10/14     10/12 
 11 v     -1.682497    2.914170    0.750000   0                             1/17      1/16       3/4       3/5     16/13      15/5     11/14     11/12 
 12 v      0.433053    0.750070    0.750000   0                             1/13      1/14      2/13      2/14     17/13     13/14     12/12     12/14 
 13 v      1.249444    1.221413    0.083333   0                             5/13      5/12      6/13      6/12     12/12     17/13     13/12     13/14 
 14 v      2.548603    0.471343    0.083333   0                             4/13      4/12      6/13      6/12     10/12     18/10     14/12     14/14 
 15 v      2.548603    1.971483    0.083333   0                             4/13      4/12      5/13      5/12     11/21     16/22     15/12     15/14 
 16 v     -0.866106    2.442827    0.416667   0                             8/13      8/12      9/13      9/12     11/13      15/4     16/14     16/12 
 17 v      0.433053    1.692757    0.416667   0                             7/13      7/12      9/13      9/12     12/13     13/13     17/14     17/12 
 18 v      0.433053    3.192897    0.416667   0                             7/13      7/12      8/13      8/12     10/16     14/16     18/14     18/12